Apical cutting thread dental implant

Abstract

An endo-osseous implant has a roughly cylindrical shape with a threaded exterior surface and an internal cavity at the apical end. The internal cavity is open toward the apical end and it has threaded walls that taper toward the exterior surface of the implant to form an apical cutting edge where they meet the threads of the outer surface. A drill shorter in length than the implant, is used to form an osseous cavity in which the longer implant is secured. The implant threads may be self-taping. As a result, upon securing the implant to the osseous tissue, bone fragments and shavings are directed into the internal cavity. When the implant reaches the base of the cavity the cutting edge cuts into the base and further anchors the implant in place.

1 . A dental implant comprising:
 a body configured to be submergible within a pre-drilled hole within a portion of a jawbone, said body having an apical end, a coronal end, and a cylindrical outer surface profile;   threads located over a major portion of the cylindrical outer surface profile of said body; and   interior walls forming an open internal chamber located at the apical end of said body, the interior walls of said internal chamber taper toward the outer surface of the body and form an apical cutting edge capable of cutting into the bone at the base of said pre-drilled hole, said walls of the internal chamber having threads over a major portion thereof, wherein the threads of the internal chamber and the threads of the outer surface meet at the apical end.   
     
     
         2 . The dental implant according to  claim 1  wherein the threads located over a major portion of the outer surface are self-tapping. 
     
     
         3 . The dental implant according to  claim 1  wherein the threads on the interior walls of the open internal chamber are self-tapping. 
     
     
         4 . The dental implant according to  claim 1 , wherein the apical end of the implant is designed to direct bone shavings into the open internal chamber of the implant. 
     
     
         5 . The dental implant according to  claim 1 , wherein interior walls of the open internal chamber define a cavity that is cylindrical, conical or dome shaped. 
     
     
         6 . The dental implant according to  claim 1 , wherein the coronal end of the implant is adapted to be fitted with an abutment and crown utilizing either an internal or external abutment-implant connection. 
     
     
         7 . The dental implant according to  claim 1 , wherein the dental implant is configured to replace an existing dental implant, and the dental implant is configured such that the cylindrical outer surface has a length that is relatively shorter than a length of the existing implant having a similar diameter to the dental implant. 
     
     
         8 . Surgical equipment for dental implantation comprising a drilling instrument and a dental implant wherein:
 the dental implant has a body configured to be submergible within a pre-drilled hole within a portion of a jawbone, said body having an apical end, a coronal end, and a cylindrical outer surface profile; said body further having external threads and   an inner chamber open toward the apical end;   wherein the open inner chamber of the implant has tapered, threaded walls that extend to the apical end; and wherein the length of the body of the drilling instrument is smaller than the length of the dental implant, and wherein the thread of the open internal chamber and the thread of the outer surface meet at the apical end.   
     
     
         9 . The surgical equipment according to  claim 8  wherein the dental implant possesses external threads that are self-tapping. 
     
     
         10 . The surgical equipment according to  claim 8 , wherein the apical end of the dental implant has cutting threads that are designed to self-tap into a bottom of the pre-drilled hole in the jawbone. 
     
     
         11 . The surgical equipment according to  claim 8 , wherein the apical end of the dental implant is designed to direct bone shavings into the internal chamber of the implant. 
     
     
         12 . The surgical equipment according to  claim 8 , wherein the interior walls of the open inner chamber of the dental implant define a cavity that is cylindrical, conical or dome shaped. 
     
     
         13 . The surgical equipment according to  claim 8 , wherein the coronal end of the dental implant is adapted to be fitted with an abutment and crown. 
     
     
         14 . A method of securing a surgical dental implant in a jawbone comprising the steps of:
 identifying a location for an implant to be secured,   preparing a surgical site for drilling and clearing operations necessary to prepare the jawbone for attachment of an implant;   drilling a cavity in the jawbone and evacuating debris from the cavity using a drill having a length shorter than that of the implant;   inserting an implant into the cavity, said implant having a coronal end and an apical end, with threads on its external surface and an internal chamber at the apical end with internal threads on its surface, wherein the threads on its external surface meet the threads of the internal chamber at the apical end,   securing the implant into the cavity by having an apical edge cut into the base of the cavity; and   guiding the bone shavings generated from the cut in the base of the cavity into the internal cavity of the implant.   
     
     
         15 . (canceled) 
     
     
         16 . The method according to  claim 14  further including the step of securing an abutment or crown to the coronal end of the implant with attaching means.